Kalanchoe plant named ‘Mount Rushmore’

ABSTRACT

A new and distinct cultivar of  Kalanchoe  plant named ‘Mount Rushmore’, characterized by its red purple-colored flowers; upright and uniform plant habit; freely branching growth habit; early and freely flowering habit; and excellent postproduction longevity.

Botanical designation: Kalanchoe blossfeldiana.

Cultivar denomination: ‘Mount Rushmore’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Kalanchoe plant, botanically known as Kalanchoe blossfeldiana, and hereinafter referred to by the name ‘Mount Rushmore’.

The new Kalanchoe is a product of a planned breeding program conducted by the Inventor in Aalsmeer and Middelburg, The Netherlands. The objective of the breeding program was to create new compact and freely-branching Kalanchoe cultivars with attractive foliage and flower coloration.

The new Kalanchoe originated from a cross made by the Inventor in October, 2000 in Aalsmeer, The Netherlands of a proprietary selection of Kalanchoe blossfeldiana identified as code number 97012, not patented, as the female, or seed, parent with a proprietary selection of Kalanchoe blossfeldiana identified as code number 99102-12, not patented, as the male, or pollen, parent. The cultivar Mount Rushmore was discovered and selected by the Inventor as a flowering plant within the progeny of the stated cross in a controlled environment in Middelburg, The Netherlands in August, 2001.

Asexual reproduction of the new Kalanchoe by terminal vegetative cuttings taken at Aalsmeer, The Netherlands, since August, 2001 has shown that the unique features of this new Kalanchoe are stable and reproduced true to type in successive generations.

BRIEF SUMMARY OF THE INVENTION

The cultivar Mount Rushmore has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature, daylength and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Mount Rushmore’. These characteristics in combination distinguish ‘Mount Rushmore’ as a new and distinct cultivar:

-   -   1. Red purple-colored flowers.     -   2. Upright and uniform plant habit.     -   3. Freely branching growth habit.     -   4. Early and freely flowering habit.     -   5. Excellent postproduction longevity.

Plants of the new Kalanchoe can be compared to plants of the parent selections. In side-by-side comparisons conducted by the Inventor in De Kwakel, The Netherlands, plants of the new Kalanchoe differed primarily from plants of the parent selections in flower color.

Plants of the new Kalanchoe can also be compared to plants of the Kalanchoe cultivar Pippijn, not patented. In side-by-side comparisons conducted by the Inventor in De Kwakel, The Netherlands, plants of the new Kalanchoe differed from plants of the cultivar Pippijn in the following characteristics:

-   -   1. Plants of the new Kalanchoe were larger than plants of the         cultivar Pippijn.     -   2. Plants of the new Kalanchoe flowered earlier than plants of         the cultivar Pippijn.     -   3. Flower color of plants of the new Kalanchoe was red purple         whereas flower color of plants of the cultivar Pippijn was         purple.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying colored photograph illustrates the overall appearance of the new Kalanchoe, showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Kalanchoe. The photograph comprises a side perspective view of a typical potted plant of ‘Mount Rushmore’.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The Royal Horticultural Society Colour Chart except where general terms of ordinary dictionary significance are used. Plants used for the aforementioned photograph and for the description were grown during the autumn in De Kwakel, The Netherlands, in a glass-covered greenhouse. During the production of the plants, day and night temperatures averaged 20° C. and light levels were about 500 Watt/m². Unrooted cuttings were directly stuck in 10.5-cm containers and received long day/short night conditions (about 15 hours of light) for about four weeks; plants then received photoinductive short day/long night conditions (minimum 15 hours darkness) until flowering. Plants were about 15 weeks old from an unrooted cutting when the photograph and the description were taken.

-   Botanical classification: Kalanchoe blossfeldiana cultivar Mount     Rushmore. -   Parentage:     -   -   Female or seed parent.—Proprietary selection of Kalanchoe             blossfeldiana identified as code number 97012, not patented.         -   Male, or pollen, parent.—Proprietary selection of Kalanchoe             blossfeldiana identified as code number 99102-12, not             patented. -   Propagation:     -   -   Type cutting.—Terminal vegetative cuttings.         -   Time to initiate roots.—Summer: About 10 days at 20° C.             Winter: About 14 days at 20° C.         -   Time to produce a rooted young plant.—Summer: About 21 days             at 20° C. Winter: About 25 days at 20° C.         -   Root description.—Fine, fibrous; brown in color.         -   Rooting habit.—Freely branching; moderately dense. -   Plant description:     -   -   Form/growth habit.—Upright, uniform and compact plant habit.             Very freely flowering with numerous compound cymes. Inverted             triangle with rounded crown. Vigorous growth habit; rapid             growth rate.         -   Plant height at flowering.—About 14 cm.         -   Plant diameter at flowering.—About 16 cm.         -   Branching habit.—Freely branching; typically seven lateral             branches develop per plant. Pinching (removal of terminal             apex) is not required but will enhance lateral branch             development.         -   Lateral branch description.—Length: About 10 cm. Diameter:             About 4 cm. Internode length: About 1 cm. Aspect: Erect.             Strength: Strong. Texture: Smooth, glabrous. Color: Close to             147A.         -   Foliage description.—Arrangement: Opposite, simple; sessile.             Length: About 8 cm. Width: About 6 cm. Shape: Elliptic.             Apex: Obtuse. Base: Cuneate. Margin: Crenate; undulate.             Texture, upper and lower surfaces: Leathery, glabrous and             succulent. Color: Developing and fully expanded leaves,             upper surface: Close to 147A. Developing and fully expanded             leaves, lower surface: Close to 147B. Venation, upper and             lower surfaces: Similar to lamina. -   Flower description:     -   -   Flower type and habit.—Single flowers arranged in compound             dichasial cymes that arise from leaf axils. Freely             flowering; about 60 open flowers per lateral branch and             about 350 open flowers per plant. Flowers persistent.             Flowers not fragrant.         -   Natural flowering season.—Plants of the new Kalanchoe             initiate and develop flowers under short day/long night             conditions or during the late autumn/winter/early spring.             Flower initiation and development can also be induced under             artificial short day/long night conditions (at least 14             hours of darkness).         -   Time to flower.—Under short day/long night photoinductive             conditions, about ten weeks are required. Actual time to             flower is primarily dependent upon temperature and light             intensity.         -   Post-production longevity.—Excellent post-production             longevity; plants maintain good foliage and flower substance             for about five weeks under interior environmental             conditions.         -   Inflorescence height.—About 9 cm.         -   Inflorescence diameter.—About 14 cm.         -   Flower diameter.—About 1.1 cm.         -   Flower height.—About 1.4 cm.         -   Flower buds.—Shape: Elongated ovoid. Length: About 1 cm.             Width: About 2 mm. Color: 138D.         -   Petals.—Quantity: Four to five fused at base. Length: About             8 mm. Width: About 6 mm. Shape: Ovate. Apex: Acute. Margin:             Entire. Texture, upper and lower surfaces: Glabrous, smooth.             Color: When opening, upper surface: 63A. When opening, lower             surface: 62C. Fully opened, upper surface: 74A to 74B. Fully             opened, lower surface: 75B.         -   Sepals.—Quantity: Four fused at base. Length: About 5 mm.             Width: About 1.5 mm. Shape: Lanceolate. Apex: Acute. Base:             Obtuse. Margin: Entire. Texture, upper and lower surfaces:             Glabrous, smooth. Color, upper and lower surfaces: 144A.         -   Peduncles.—Length: About 3 to 4 mm. Diameter: About 1 mm.             Aspect: Erect. Strength: Strong. Texture: Smooth, leathery.             Color: Close to 138C.         -   Reproductive organs.—Stamens: Quantity per flower: Eight.             Anther shape: Oval. Anther length: About 1 mm. Anther color:             Yellow. Pollen amount: Moderate. Pollen color: Yellow.             Pistils: Quantity per flower: Four. Style length: About             4 mm. Style color: Light green. Stigma shape: Rounded.             Stigma color: Light green. Ovary color: Green.         -   Seed.—Length: About 0.05 mm. Diameter: About 0.025 mm.             Color: Brownish black. -   Disease/pest resistance: Plants of the new Kalanchoe have not been     observed to be resistant to pathogens and pests common to     Kalanchoes. -   Temperature tolerance: Plants of the new Kalanchoe have been     observed to tolerate low temperatures of 17° C. and high     temperatures of 40° C. 

1. A new and distinct cultivar of Kalanchoe plant named ‘Mount Rushmore’, as illustrated and described. 